html - How to cache specific parts of page in PHP intelligently? -

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problem: i've website has 50k+ pages , of them updated once on creation time, building caching these pages not need frequent changes on content. i'm confuse few things.

  • if cache whole page, how preserve user login/logout status in sidebar
  • how cache meta tags page main caching done in middle of page expensive part far processing concerned.

take @ cache_lite pear module.


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